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Finding the Fourth Proportional to 164,505.30, 246,429.90 and 85,663.95

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Solution

The fourth proportional to 164,505.30, 246,429.90 and 85,663.95 is: 128,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,505.30 : 246,429.90 = 85,663.95 : x
  2. Step 2: Convert to fraction form
    164,505.30/246,429.90 = 85,663.95/x
  3. Step 3: Cross multiply
    164,505.30x = 246,429.90 × 85,663.95
  4. Step 4: Simplify right side
    164,505.30x = 21,110,158,632.11
  5. Step 5: Solve for x
    x = 21,110,158,632.11/164,505.30
  6. Step 6: Final answer
    x = 128,325.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.